Chair



FIG. 1 is a front perspective view of a chair according to a first embodiment of my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is top view thereof. 

The ornamental design for a chair, as shown and described. 